In the network shown in the figure each of resistance is equal to 2Ω. The resistance between A and B is
A
1Ω
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B
2Ω
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C
3Ω
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D
4Ω
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Solution
The correct option is B2Ω
Taking the portion COD is figure to outside the triangle (left), the above circuit will be now as resistance of each is 2Ω the circuit will behaves as a balanced wheatstone bridge and no current flows through CD. Hence RAB=2Ω